DE3789437D1 - Optical switch. - Google Patents
Optical switch.Info
- Publication number
- DE3789437D1 DE3789437D1 DE87310984T DE3789437T DE3789437D1 DE 3789437 D1 DE3789437 D1 DE 3789437D1 DE 87310984 T DE87310984 T DE 87310984T DE 3789437 T DE3789437 T DE 3789437T DE 3789437 D1 DE3789437 D1 DE 3789437D1
- Authority
- DE
- Germany
- Prior art keywords
- amplifier
- optical
- optical switch
- switch
- logic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F3/00—Optical logic elements; Optical bistable devices
Abstract
Using a semi-conductor laser amplifier 1 in reflection, an optical switch is achieved which can be applied as either an AND/OR, or a NAND/NOR, logic gate. The amplifier 1 responds to an optical input switching signal and the logical characteristics of its response can be controlled by selection of the drive current to the amplifier 1. The switch finds application in optical logic or communication systems.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868629871A GB8629871D0 (en) | 1986-12-15 | 1986-12-15 | Optical switch |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3789437D1 true DE3789437D1 (en) | 1994-04-28 |
DE3789437T2 DE3789437T2 (en) | 1994-06-30 |
Family
ID=10609002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3789437T Expired - Fee Related DE3789437T2 (en) | 1986-12-15 | 1987-12-14 | Optical switch. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4873690A (en) |
EP (1) | EP0274250B1 (en) |
JP (1) | JP2637531B2 (en) |
AT (1) | ATE103400T1 (en) |
CA (1) | CA1294804C (en) |
DE (1) | DE3789437T2 (en) |
ES (1) | ES2050117T3 (en) |
GB (1) | GB8629871D0 (en) |
WO (1) | WO1988004791A1 (en) |
Families Citing this family (53)
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---|---|---|---|---|
GB8629873D0 (en) * | 1986-12-15 | 1987-01-28 | British Telecomm | Optical signal processing device |
IT1219324B (en) * | 1988-05-24 | 1990-05-03 | Cselt Centro Studi Lab Telecom | PROCEDURE FOR THE CHARACTERIZATION OF RESTABLE SEMICONDUCTOR LASERS |
FR2682781B1 (en) * | 1991-10-16 | 1993-11-26 | France Telecom | LOGIC FUNCTION GENERATOR USING OPTICAL TRANSPOSITION IN A LASER DIODE WITH DISTRIBUTED FEEDBACK. |
GB9404788D0 (en) * | 1994-03-11 | 1994-04-27 | British Telecomm | Optical device |
US6275516B1 (en) * | 1998-07-02 | 2001-08-14 | Agere Systems Optoelectronics Guardian Corp. | Article for detecting power drift in the putout of a diode array source |
JP4368573B2 (en) * | 2002-03-12 | 2009-11-18 | 独立行政法人科学技術振興機構 | Ultrafast optical memory device using a bistable semiconductor laser |
US8036539B2 (en) * | 2005-06-28 | 2011-10-11 | Finisar Corporation | Gigabit ethernet longwave optical transceiver module having amplified bias current |
US7505496B2 (en) * | 2006-04-05 | 2009-03-17 | Ciena Corporation | Systems and methods for real-time compensation for non-linearity in optical sources for analog signal transmission |
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JP2015532536A (en) | 2012-10-05 | 2015-11-09 | デイビッド ウェルフォード, | System and method for amplifying light |
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US9840734B2 (en) | 2012-10-22 | 2017-12-12 | Raindance Technologies, Inc. | Methods for analyzing DNA |
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CA2895770A1 (en) | 2012-12-20 | 2014-07-24 | Jeremy Stigall | Locating intravascular images |
US10942022B2 (en) | 2012-12-20 | 2021-03-09 | Philips Image Guided Therapy Corporation | Manual calibration of imaging system |
US11406498B2 (en) | 2012-12-20 | 2022-08-09 | Philips Image Guided Therapy Corporation | Implant delivery system and implants |
CA2895989A1 (en) | 2012-12-20 | 2014-07-10 | Nathaniel J. Kemp | Optical coherence tomography system that is reconfigurable between different imaging modes |
US10939826B2 (en) | 2012-12-20 | 2021-03-09 | Philips Image Guided Therapy Corporation | Aspirating and removing biological material |
CA2895502A1 (en) | 2012-12-20 | 2014-06-26 | Jeremy Stigall | Smooth transition catheters |
EP2934280B1 (en) | 2012-12-21 | 2022-10-19 | Mai, Jerome | Ultrasound imaging with variable line density |
US9486143B2 (en) | 2012-12-21 | 2016-11-08 | Volcano Corporation | Intravascular forward imaging device |
US9612105B2 (en) | 2012-12-21 | 2017-04-04 | Volcano Corporation | Polarization sensitive optical coherence tomography system |
WO2014100606A1 (en) | 2012-12-21 | 2014-06-26 | Meyer, Douglas | Rotational ultrasound imaging catheter with extended catheter body telescope |
JP2016508233A (en) | 2012-12-21 | 2016-03-17 | ナサニエル ジェイ. ケンプ, | Power efficient optical buffering using optical switches |
EP2934323A4 (en) | 2012-12-21 | 2016-08-17 | Andrew Hancock | System and method for multipath processing of image signals |
WO2014100530A1 (en) | 2012-12-21 | 2014-06-26 | Whiseant Chester | System and method for catheter steering and operation |
US10058284B2 (en) | 2012-12-21 | 2018-08-28 | Volcano Corporation | Simultaneous imaging, monitoring, and therapy |
JP2016508757A (en) | 2012-12-21 | 2016-03-24 | ジェイソン スペンサー, | System and method for graphical processing of medical data |
EP2936626A4 (en) | 2012-12-21 | 2016-08-17 | David Welford | Systems and methods for narrowing a wavelength emission of light |
EP2965263B1 (en) | 2013-03-07 | 2022-07-20 | Bernhard Sturm | Multimodal segmentation in intravascular images |
US10226597B2 (en) | 2013-03-07 | 2019-03-12 | Volcano Corporation | Guidewire with centering mechanism |
CN105228518B (en) | 2013-03-12 | 2018-10-09 | 火山公司 | System and method for diagnosing coronal microvascular diseases |
US11154313B2 (en) | 2013-03-12 | 2021-10-26 | The Volcano Corporation | Vibrating guidewire torquer and methods of use |
CN105120759B (en) | 2013-03-13 | 2018-02-23 | 火山公司 | System and method for producing image from rotation intravascular ultrasound equipment |
US11026591B2 (en) | 2013-03-13 | 2021-06-08 | Philips Image Guided Therapy Corporation | Intravascular pressure sensor calibration |
US9301687B2 (en) | 2013-03-13 | 2016-04-05 | Volcano Corporation | System and method for OCT depth calibration |
US10219887B2 (en) | 2013-03-14 | 2019-03-05 | Volcano Corporation | Filters with echogenic characteristics |
EP2967606B1 (en) | 2013-03-14 | 2018-05-16 | Volcano Corporation | Filters with echogenic characteristics |
US10292677B2 (en) | 2013-03-14 | 2019-05-21 | Volcano Corporation | Endoluminal filter having enhanced echogenic properties |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4382660A (en) * | 1976-06-16 | 1983-05-10 | Massachusetts Institute Of Technology | Optical transistors and logic circuits embodying the same |
US4359773A (en) * | 1980-07-07 | 1982-11-16 | Bell Telephone Laboratories, Incorporated | Semiconductor lasers with selective driving circuit |
FR2492995A1 (en) * | 1980-10-24 | 1982-04-30 | Oudar Jean Louis | Optical bistable device for integrated optical system - includes two linked semiconductor lasers of which only one may function at one time |
US4468773A (en) * | 1981-05-29 | 1984-08-28 | Seaton Norman T | Laser control apparatus and method |
CA1206633A (en) * | 1982-11-29 | 1986-06-24 | Kunio Nagashima | Optical time-division switching system employing optical bistable devices |
US4751710A (en) * | 1984-07-26 | 1988-06-14 | Nec Corporation | Semiconductor laser device |
US4689793A (en) * | 1984-12-19 | 1987-08-25 | Gte Laboratories Incorporated | Optical logic and memory apparatus |
US4748630A (en) * | 1985-01-17 | 1988-05-31 | Nec Corporation | Optical memory device comprising a semiconductor laser having bistability and two injection current sources for individually controlling the bistability |
-
1986
- 1986-12-15 GB GB868629871A patent/GB8629871D0/en active Pending
-
1987
- 1987-12-14 JP JP63500404A patent/JP2637531B2/en not_active Expired - Lifetime
- 1987-12-14 WO PCT/GB1987/000905 patent/WO1988004791A1/en unknown
- 1987-12-14 DE DE3789437T patent/DE3789437T2/en not_active Expired - Fee Related
- 1987-12-14 ES ES87310984T patent/ES2050117T3/en not_active Expired - Lifetime
- 1987-12-14 EP EP87310984A patent/EP0274250B1/en not_active Expired - Lifetime
- 1987-12-14 US US07/230,837 patent/US4873690A/en not_active Expired - Lifetime
- 1987-12-14 AT AT87310984T patent/ATE103400T1/en not_active IP Right Cessation
- 1987-12-15 CA CA000554365A patent/CA1294804C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01502615A (en) | 1989-09-07 |
ATE103400T1 (en) | 1994-04-15 |
EP0274250A2 (en) | 1988-07-13 |
US4873690A (en) | 1989-10-10 |
ES2050117T3 (en) | 1994-05-16 |
JP2637531B2 (en) | 1997-08-06 |
CA1294804C (en) | 1992-01-28 |
EP0274250B1 (en) | 1994-03-23 |
DE3789437T2 (en) | 1994-06-30 |
WO1988004791A1 (en) | 1988-06-30 |
GB8629871D0 (en) | 1987-01-28 |
EP0274250A3 (en) | 1988-07-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |